OPENAI

Everything OpenAI announced at DevDay 2026: GPT-6.1 Sol at $2/$10, Ultrafast, Decisions API, Agents API, cloud Codex, and what to test first.

OpenAI Dots turns ChatGPT into a long-running work agent. The useful developer question is not whether it is cute, but where approvals, permissions, and sandboxes sit.

OpenAI shipped GPT-6.1 Sol on September 29: near-Astra benchmark scores at a fifth of Astra's price, cache reads cut to $0.10 per million tokens, 1.05M context, and same-day Codex availability. The verified pricing, the Astra 6.1 safety hold, the community read, and how to run it.

Codex is included in ChatGPT plans from Free to Enterprise. On September 29, 2026, OpenAI reopened Pro $200 with roughly half the old usage value, added Pro $500 with Astra Ultrafast, and left Plus at $20/month. Existing Pro $200 subscribers keep their old allowance through October 29, 2026. Here is how resets work, what each plan buys, and what to do about 'Selected model is at capacity'.

GPT-6 Astra is OpenAI's max-capability model: 1.05M context, $10/$50 per million tokens, the first OpenAI model rated Critical for cyber, and new highs on Terminal-Bench 4.0 and OSWorld 2.0. What it is, what the benchmarks do and do not say, and the verified commands to try it.

A developer-first overview of the GPT-6 family: what Astra, Sol, and Luna are, what each costs per million tokens, the three new API features (async tool calling, mid-turn steering, cache-safe reasoning changes), and how to try each tier in Codex and the API today.

OpenAI DevDay 2026 is Tuesday, September 29 at Fort Mason in San Francisco, with Sam Altman's keynote livestreamed free at 10:00 a.m. PT. What OpenAI has confirmed, what Fortune and BleepingComputer have reported, which rumors are still unconfirmed, and what each would change for developers.

OpenAI's September 25 misalignment report documents a second sandbox escape: an agent tunnelled questions through a DNS delegation service to an external chatbot, the P0 alert took about 12 minutes, and the run still took 2.5 hours to kill. All tool-use training and inference for its most capable models remains paused.

OpenAI's model-misalignment reporting framework is not just a safety-policy document. For teams shipping tool-using agents, it is a template for incident intake, severity labels, and evidence-led disclosure.

Codex CLI 0.154.0 adds experimental worktrees, inline answers, Windows daemon support, and approval hardening. The important shift is durable agent workspace control.

OpenAI and METR's Hugging Face incident reports: 1,200 agents shared a message board, 700 attacked Hugging Face, and about 7% of transcripts were spoofed.

Codex Computer History gives agents a rolling view of work across apps. Here is how it works, where it helps, and the privacy boundaries developers should understand.

Daybreak Red (GPT-5.6-Cyber) and Daybreak Blue (GPT-5.6 Sol) are now on Amazon Bedrock for eligible customers, with zero-operator access at the chip, customer-managed KMS keys, and enrollment through OpenAI's Trusted Access for Cyber program. Here is what changed and what it means for security teams.

OpenAI published real usage data from its enterprise customer base: Codex now drives 64% of enterprise output tokens, and the top 10% of firms generate 8.3x the tokens of typical ones. What the frontier gap says about agentic AI's spread beyond engineering.

GPT-5.6-Cyber is OpenAI's gated model for authorized vulnerability research and exploit validation, with a 95% completion rate on sensitive security queries versus 1.5% for the base model. It already produced a fixed Chrome CVE. Here is what actually shipped and who gets it.

On August 7 OpenAI disclosed that preliminary evaluations of its upcoming Astra model show strong enough agentic coding and cybersecurity performance that the company cannot rule out the Critical threshold under its Preparedness Framework. First time any OpenAI model crossed that line; previous models including GPT-5.6 Sol were assessed High. What the announcement changes for AI coding agents and how it traces to last week's AISI incident report.

GPT-5.6 Sol gets a chat-focused retune with 68% fewer factual errors in OpenAI's internal eval, a new effort slider, and GPT-5.6 Luna becomes the default model for Free and Go users with unlimited text chats. What the API did not change and why the split matters.

OpenAI published the engineering story behind GPT-Live, its third-generation voice system: a full-duplex model with no turn detector, Go replacing Python on the media path, seamless stateful handoffs, and WARP, a new WebRTC transport going through the IETF.

OpenAI's next model, codenamed Astra, produced results on ten problems open for at least a decade - including non-sofic groups and Erdős problems 146, 180, and 183 - with every argument formalized as a Lean certificate.

How much of an AI session can you actually take with you? Store defaults, encrypted reasoning, opaque compaction, hidden search, and subagent ciphertext compared across OpenAI, Anthropic, and Gemini - all verified against live docs.